DE1166312B - Telecommunication cables with single wires arranged in layers, from which double wires are formed by systematic crossing - Google Patents

Description

Telecommunication cables with single wires arranged in layers, from which double lines are formed by systematic crossing Addition to the additional application: S 74591 VIII d / 21 c Auslegeschrift 1159 056 The main patent 1083 880 relates to telecommunication cables with single wires arranged in layers, from which double lines are formed by mutual systematic crossing are. It is proposed in the main patent to carry out systematic crossings between two adjacent cores of a layer at certain intervals within crossing sections that are short compared to the manufacturing lengths so that the same counting sequence of the cores is present at the beginning and end of each crossing section.

After this, additional related patent application S74591V111d / 21c (German Auslegeschrift 1 159 056) are to remain uncrossed associated with six individual wires twisted around a No at the successive crossing points of two to eiiq and the same double line wires. This has the consequence that at the crossing points, seen in the circumferential direction, every third wire remains uncrossed. This has the advantage that the number of crossings is reduced by a third and the thickening of the core layer caused by the crossings is reduced. It was recognized that this crossing principle can also be used in a corresponding manner in telecommunication cables according to the main patent in which the number of cores in a stranded layer is a multiple, in particular twice and four times six.

The invention therefore consists in stranding layers, the number of which is a multiple, in particular two and four times, of six. to leave every third wire uncrossed at the crossings that follow one another in the circumferential direction. If the number of wires exceeds that. Twice as much as six - i.e. twelve, it is advantageous to decouple all lines, between the individual or between. several successive crossing sections, but preferably within the crossing sections, to cross three consecutive veins and the next three consecutive veins with each other at additional crossing points.

The invention is illustrated below with reference to the in the drawing Embodiments nälier explained.

The F i g. 1 shows, in cross section , a stranded layer of twelve individual cores 1 to 12, of which two diagonally opposite cores each form a double line. In the space enclosed by this stranded layer , six further individual strands stranded around a core can be arranged, if desired.

The F i g. 2 shows a planned twelve veins crossing section of sixteen basic crossing sections, a previous basic intersection G is expected to basic crossover section .. follow at the beginning of the crossing portion - z. B. starting with core 1 - one on top of the other in the circumferential direction: firstly one core (core 1) displaced at the successive intersections in one circumferential direction, second one at the successive intersections in the opposite direction to the first core (core 2) and thirdly, a vein alternately at the successive intersections - in one direction and in the other (vein 3) and so on.

The wires 1, 4, 7, 10 are thus shifted in one circumferential direction and the wires 2, 5, 8, 11 in the opposite circumferential direction3 while the wires 3, 6, 9, 12 at the successive intersections alternately in are shifted in one direction and the other. Of these latter cores, which are alternately not crossed at the successive crossing points, cores 3 and 9 and cores 6 and 12 each form a double line.

In which; Crossing plan according to FIG. 33, which comprises a crossing section with 32 basic crossing sections, - deviating from FIG. 2 the displacement> of the cores 1, 4, 7, 10 displaced in one direction and the cores 2, 5, 8, 11 displaced in the other direction at angular intervals of 1801 reversed. This results in a larger number of crossings per crossing section, so that the same counting sequence of the cores is present at the beginning and end of the crossing section.

With the help of the FIG. 2 and 3 carried out crossings is achieved that all double lines formed from the veins. or trunk lines and all phantom lines formed from the trunk lines are mutually decoupled. The following decoupled trunk and phantom lines can be formed from the twelve cores: Wires 1/7 = St 1 Phi Wires 4/10 = St2 Wires 2/8 = St` Ph Ph 1 2 Wires 5111 = St4 Wires 3/9 = St5 Ph Cores 6/12 = st6 St to St6 mean the six formable trunk lines, Phi to Ph "three four-phantom lines and Phil, an eight-phantom line formed from Ph and Ph.

In order to decouple all double lines or trunk lines and all Phantoni lines in a stranded layer of 24 individual wires, additional crossing points are provided within the intersection section, preferably at regular intervals, at which three consecutive wires are crossed with the next three consecutive wires. These additional crossings are briefly referred to as triple crossings. An exemplary embodiment in this regard is illustrated with reference to FIGS. 4 explained.

As can be seen, the basic crossings are in principle in the same way as in FIG. 2 executed. The crossing section begins with 32 basic crossing sections. In the middle of the smooth section following the last basic crossing, a triple crossing D is indicated so that there is half a smooth section on each side of the triple crossing . Three consecutive wires are crossed at the same time with the next three successive cores at the triple point of intersection D. This is followed by three more such partial crossing sections, so that a crossing section is created at the end of which the same counting sequence of the wires is present as at the beginning of the section. By using the additional triple crossings, a complete decoupling of all trunk lines and all phantom lines is achieved in stranding layers, the number of wires is more than three times six. The 24 cores can be used to create 12 trunk lines, 6 quad phantom lines, 3 eight phantom lines and one sixteen phantom line.

The invention can also be used accordingly for other numbers of cores that are a multiple of six. In contrast to the exemplary embodiment according to FIG. 3 , the reversal of the wire displacement in the circumferential direction can also take place at angular intervals other than 180 ' (, 7th). In general, the wire displacement direction can be made according to displacement angles of -r or an integral multiple of #T. In addition, the various types of intersection can always be arranged in such a way that the different displacement angles preferably used for different cores occur, so that the decoupling of all possible transmission lines from one another is ensured on a complete decoupling section.

Claims (2)

Claims: 1. Telecommunication cables with individual cores arranged in layers, from which double lines are formed from cores diametrically opposite in position by mutual systematic crossing, with systematic crossings between two adjacent cores at the intersection in a layer within cross sections that are short compared to the manufacturing length certain intervals are carried out so that at the beginning and end of each intersection section the same counting sequence of the wires is available, according to the additional patent application S 74591 VIII d / 21 c (German Auslegeschrift 1159 056), characterized in that in stranded layers, the number of wires is a multiple , in particular twice and four times as much as six, at the crossing points, seen in the circumferential direction, every third wire remains uncrossed. 2. Telecommunication cable according to claim 1, characterized in that in the circumferential direction - z. B. starting with the core (1) - one after the other: firstly one core (1, 4, 7, 10) displaced in one circumferential direction at the successive crossing points, secondly one core (2 , 5, 8, 11) and thirdly, a wire (3, 6, 9, 12) etc. ( Fig. 2) that is shifted alternately in one and the other direction at the successive crossing points. 3. Telecommunication cable according to claim 2, characterized in that the displacement direction of the cores displaced in one circumferential direction (1, 4, 7, 10) and the cores displaced in the other circumferential direction (2, 5, 8, 11) according to displacement angles of - t or an integer multiple of a is reversed ( Fig. 3). 4. Telecommunication cable according to spoke 1 or the following claims, characterized in that between the individual or between several successive intersection sections, but preferably within the intersection sections, at the same time three successive wires and the next three successive wires are crossed with each other at additional crossing points (F i g. 4).